Home / 85,293.36-117,754.56-56,651.76

Finding the Fourth Proportional to 85,293.36, 117,754.56 and 56,651.76

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Solution

The fourth proportional to 85,293.36, 117,754.56 and 56,651.76 is: 78,212.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,293.36 : 117,754.56 = 56,651.76 : x
  2. Step 2: Convert to fraction form
    85,293.36/117,754.56 = 56,651.76/x
  3. Step 3: Cross multiply
    85,293.36x = 117,754.56 × 56,651.76
  4. Step 4: Simplify right side
    85,293.36x = 6,671,003,072.03
  5. Step 5: Solve for x
    x = 6,671,003,072.03/85,293.36
  6. Step 6: Final answer
    x = 78,212.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.